the first beat of a musical measure (as the conductor's arm moves downward)
down-beat的用法和样例：
例句
用作名词 (n.)
The grain crop has gone down this year. 今年的粮食作物产量下降了。
Sale is down a bit due to the revaluation. 由于货币升值销售额有下降。
The economy was turning down at that time. 那时经济正日趋衰退。
His factory closed down during the period of economic recession. 他的工厂在经济衰退时期关闭了。
Waves of heat beat against their faces.From time to time there was a low roar, as if some primordial beast was snarling with rage to show its prowess. 阵阵热气扑面而来，不时还传来一阵低沉的嘶吼声，好像有一只洪荒怪兽，正在里面咆哮发威。
Levelling up never happens but always levelling down in my experience. 对于我来说，水平提高是从未有过的事情，倒是水平下降的情况时有发生。
These new figures give the lie to the belief that unemployment is going down. 这些新的数据表明失业率在下降的看法是不真实的。
Waves of heat beat against their faces.From time to time there was a low roar, as if some primordial beast was snarling with rage to show its prowess. 阵阵热气扑面而来，不时还传来一阵低沉的嘶吼声，好像有一只洪荒怪兽，正在里面咆哮发威。
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